Micro PLCs versus Programmable Relays (8 pages)
Micro PLCs have greatly improved their price/performance ratio over the last few years, making them the right choice for more applications as compared to programmable relays.

Industrial Managed Ethernet Switches (6 pages)- Why You Might (or Might Not) Need an Industrial Managed Ethernet Switch
Explore the reasons and applications where a managed switch should be used and when an unmanaged switch is sufficient.

Electrical Arcs
(10 pages)
Those of us who have worked with, or around, electrical equipment have witnessed electrical arcs. At the very least, we've seen the sparks produced when a relay or
contactor switches off.